Improved boring-tool



ritmi States CHARLES CARROL STRONG, OF DEFIANCE, OHIO.

Lette/rs Patent N I. 92,395, lated July] 6,1869.

IMPROVED BORING-TOOL.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it,known that I, CHARLES OARROL STRONG, of Deliance, in the county of Defiance, and State of Ohio, have invented a new and improved Boring-Tool; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l represents a side view, partly in section, of my improved boring-tool.

Figure 2 is a transverse section ot' the same, taken on the line :t x, fig. l.

Similar letters of reference indicate corresponding parts.

This invention relates to an improved boring-tool,

which is to be applied to lathes of all descriptions, and which isso arranged that it will be guided. and held in the proper manner.

The invention consists in arranging a loose colla on the tool, said collar turning freely on it, so that it may be supported in a suitable stand, or in the article bored, as may be desired.

The tool has thereby a convenient support at or near its workixllg-end, and will be more apt to work steady and true than it wouldwithout the guide- Collar.

A, in the drawing, represents a shank of the tool. It is made of suitable length and form, and to be clamped in the lathe in suitable manner.

B is the cutter attached to the tool. It is represented as tted through the slotted or perforated end of the shank A, and clamped by a nut, a, as'in fig. l. The cutter may, however, be arranged in other suitable manner, or two or more cutters may be arranged on the same tool.

Betweenthe cutter B and a shoulder, b, that is formed on the shank A, or between two suehlshonl-` ders, is arranged, on the shank,-a loose sleee, C, which can freely turn on the shank, but not slide on the same.

This sleeve is supported in a stand ofthe latheframe, or in the article, D, to be bored.

I prefer to have it in the latter position, as the y sleeve can then turn with the article on the stationary shank. Much friction is by this arrangement overcome. I

If the tool is turned. in the stationary artiele,the sleeve is held in the stand, and will then allow easier motion to the tool. In all cases, the sleeve will form an anti-friction bearing.

I am aware of the patent granted to Lafayette Stevens, December 15, 1857, for an improved boringtool, in which a loose independent collar is placed directly upon the spiral portions of an auger for woodboring. This collar is provided with a series of lon-l` gitndinal knife-edges upon its periphery, whienenterw.` the'wood being bored and prevent said collar from turning. Such a collar could not be employed in boring metal, because the knife-edges would prevent it from entering the metal, tolsupport the end of the boring-tool. I therefore claim nothing shown in said patent as my invention.

Having thus described my invention,

I claim as new, and desire to secure by Letters Patent- The loose collar G, having a smooth periphery, when applied to the boring-tool A, between the cutter B and shoulder b, as herein described, for the purpose speeied.v

CHARLES OARROL STRONG.

Witnesses: l PETER KETTINEING, JOHN J. MYERS. 

